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What causes 171 174 lean and when getting in the.

Tiny
BIGDAWGMATT
  • MEMBER
  • 2006 TOYOTA TUNDRA
  • 150,000 MILES
What causes 171 174 lean and when getting in the throttle hard it like dies rpm falls to zero and back up like nothing happened and it don't do it every time its like a throttle stop
Friday, April 5th, 2013 AT 12:26 AM

4 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Codes could be low fuel pressure, vacuum leaks, bad pcv valve or bad mass air flow

Roy
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Friday, April 5th, 2013 AT 12:33 AM
Tiny
BIGDAWGMATT
  • MEMBER
  • 4 POSTS
It runs great no missing just like push down gas hard and its like you turn key off for a second and turn back on its like nothing I have ever seen thanks for help
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Friday, April 5th, 2013 AT 12:56 AM
Tiny
BIGDAWGMATT
  • MEMBER
  • 4 POSTS
That's only while driving
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Friday, April 5th, 2013 AT 12:58 AM
Tiny
BIGDAWGMATT
  • MEMBER
  • 4 POSTS
Drove fine today.I don't know what to the customer.
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Friday, April 5th, 2013 AT 4:07 PM

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